def rev(lists, times, goal, num, ans=[]): # リスト 何回目 最終的な値 数値　答えの記録
    if times == len(lists) and goal == num:
        ans.append(True)
        return ans
    elif times == len(lists):
        ans.append(False)
        return ans
    
    for i in range(2):
        if i == 0:
            tmp = rev(lists, times+1, goal, num+lists[times], ans+['+'])
        elif i == 1:
            tmp = rev(lists, times+1, goal, num*lists[times], ans+['*'])
        
        if tmp != None:
            if tmp[-1]:   
                return tmp
        
        
            
n = int(input())
total = int(input())
st, *a = list(map(int, input().split()))

ans = rev(a, 0, total, st)

[print(i, end='') for i in ans[:-1:]]
print()